import router from './router'
import store from './store'
import {
  Message
} from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css' // progress bar style
import {
  getToken
} from '@/utils/auth' // get token from cookie
import getPageTitle from '@/utils/get-page-title'

NProgress.configure({
  showSpinner: false
}) // NProgress Configuration

const whiteList = ['/login'] // no redirect whitelist

router.beforeEach(async (to, from, next) => {
  // start progress bar
  NProgress.start()

  // set page title
  const title = process.env.NODE_ENV === 'production' ? to.meta.title : 'VUE'
  document.title = getPageTitle(title)

  // determine whether the user has logged in
  const hasToken = getToken()
  // const hasToken = getToken() || 'admin-token'

  if (hasToken) {
    checkPermission(to, next)
    if (to.path === '/login') {
      // if is logged in, redirect to the home page
      next({
        path: '/'
      })
      NProgress.done()
    } else {
      const hasGetUserInfo = store.getters.name
      if (hasGetUserInfo) {
        next()
      } else {
        try {
          // get user info
          await store.dispatch('user/getInfo')

          next()
        } catch (error) {
          // remove token and go to login page to re-login
          await store.dispatch('user/resetToken')
          Message.error(error || 'Has Error')
          next(`/login?redirect=${to.path}`)
          NProgress.done()
        }
      }
    }
  } else {
    /* has no token*/
    if (whiteList.indexOf(to.path) !== -1) {
      // in the free login whitelist, go directly
      next()
    } else {
      // other pages that do not have permission to access are redirected to the login page.
      next(`/login?redirect=${to.path}`)
      NProgress.done()
    }
  }
})

router.afterEach(() => {
  // finish progress bar
  NProgress.done()
})

function checkPermission(to, next) {
  // console.log(to)
  if (to.meta.permission && to.meta.flag) {
    if (sessionStorage.permission.includes(to.meta.flag)) {
      console.log('continue')
      next()
    } else {
      console.log('stop')
      next({
        // path: '/show/index'
        path: '/404'
      })
    }
  } else {
    next()
  }
}
